The Power of Information

National Drinking Water Database


Alpha particle activity (excl radon and uranium) in Idaho


Alpha particles are a form of radiation associated with radioactive mining waste pollutants and natural sources. [read more]

The Most Polluted Communities in Idaho

84 water utilities reported detecting Alpha particle activity (excl radon and uranium) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Alpha particle activity (excl radon and uranium) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Franklin Domestic Water Users
Boise, ID
751 of 143.3 pCi/L
(43.3 pCi/L)
2Seamans Second Subd Water Assn
Caldwell, ID
603 of 319.9 pCi/L
(12.5 to 31.2 pCi/L)
3Northside Estates Hoa Inc
ID
1002 of 217.9 pCi/L
(0.8 to 35 pCi/L)
4Meander Point Subd
Twin Falls, ID
1401 of 115.27 pCi/L
(15.27 pCi/L)
5Charolais Motel
Meridian, ID
421 of 114.6 pCi/L
(14.6 pCi/L)
6Stecher Mutual Water Company
Caldwell, ID
561 of 112.6 pCi/L
(12.6 pCi/L)
7Rich Subd
Middleton, ID
601 of 312.23 pCi/L
(0 to 36.7 pCi/L)
8Eagle Water Company Inc
Eagle, ID
9,0001 of 19.1 pCi/L
(9.1 pCi/L)
9Leisure Lane
Meridian, ID
265 of 108.43 pCi/L
(0 to 35.8 pCi/L)
10Cassandra Hills Owners Assn
St Maries, ID
451 of 18 pCi/L
(8 pCi/L)

Health Based Limits for Alpha particle activity (excl radon and uranium)

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 pCi/L
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.0.15 pCi/L
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.15 pCi/L
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.15 pCi/L

Violation Summary for Alpha particle activity (excl radon and uranium) in Idaho

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Idaho since 2004

Violation TypeNumber of Violations
Failure to monitor regularly28
Over maximum contaminant level, Average1